. A manual of mechanical dentistry and metallurgy . features. And with anobserving and critical eye the operator should not only beable to give the teeth their proper length and fulness, butby building up and carving the wax about them, be ableto at least fairly reproduce the lost portions of the facialcontour. In doing this the expressional value of the teethshould always be kept in mind. There are so many points of expressional value in thearrangement of the teeth, that it is always better to trythem in the mouth before they are fully arranged, and note SELECTION AND ARRANGEMENT OF TEETH. 39
. A manual of mechanical dentistry and metallurgy . features. And with anobserving and critical eye the operator should not only beable to give the teeth their proper length and fulness, butby building up and carving the wax about them, be ableto at least fairly reproduce the lost portions of the facialcontour. In doing this the expressional value of the teethshould always be kept in mind. There are so many points of expressional value in thearrangement of the teeth, that it is always better to trythem in the mouth before they are fully arranged, and note SELECTION AND ARRANGEMENT OF TEETH. 39 any changes that may be necessary to make them harmonizewith the general features of the patient. Fifth, the articulation. The nicest important point tohear in mind in articulating the teeth is the normal articu-lation of the natural teeth. The student should study thewonderful mechanical adaptability of these organs when-ever the opportunity is afforded. Fig. 14 is a typical illus-trati(^n. Observe that all the teeth except the inferior Fig. central incisors and the superior third molars have twoantagonists in articulation. In arranging the teeth upon the wax plates, some preferto adjust the inferior incisors first, wdiile others claim thatthe superior central incisors should first be set in latter is doubtless the best practice, though it is a pointof small consequence if the proper result is obtained. Inarranging the posterior teeth it is important that the innercusps should occlude as perfectly as those of the outer orbuccal surface. The greater pressure should usually bebrought upon the bicuspids and the first molars; and thisbite should be perfect, that is, these teeth should touchevenly and at the same time upon both sides of the mouth. 40 MECHANICAL DENTISTRY AND METALLURGY. Such an articulation may be more thoroughly secured byremoving the sharp points from the cusps of the will also largely o\ercome the clattering so oftennoticed in artif
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